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Spring boot has an annotation, @SpringBootApplication, which allows the Spring Boot application to autoconfigure third-party libraries and detected features found on the classpath. [16] As an example, the class that has the @SpringBootApplication annotation can extend the SpringBootServerInitializer class if the application is packaged and ...
The @Configuration is a Spring-specific annotation that marks a class as the configuration class. The configuration class provides the beans to the Spring ApplicationContext. [53] Each of the methods in the Spring configuration class is configured with the @Bean annotation.
Many modern frameworks use a convention over configuration approach. The concept is older, however, dating back to the concept of a default, and can be spotted more recently in the roots of Java libraries. For example, the JavaBeans specification relies on it heavily. To quote the JavaBeans specification 1.01: [2]
The code sample shown below demonstrates how various technologies in Java EE 7 are used together to build a web form for editing a user. In Jakarta EE a (web) UI can be built using Jakarta Servlet, Jakarta Server Pages (JSP), or Jakarta Faces (JSF) with Facelets. The example below uses Faces and Facelets. Not explicitly shown is that the input ...
Spring Integration: Framework for enterprise application integration. Spring Roo: Spring Roo is an open source software tool that uses convention-over-configuration principles to provide rapid application development of Java-based enterprise software Spring Security: Authentication and access-control framework TestNG
For example, dependency injection can be used to externalize a system's configuration details into configuration files, allowing the system to be reconfigured without recompilation. Separate configurations can be written for different situations that require different implementations of components.
Spring Roo is an open-source software tool that uses convention-over-configuration principles to provide rapid application development of Java-based enterprise software. [1] The resulting applications use common Java technologies such as Spring Framework , Java Persistence API , Thymeleaf , Apache Maven and AspectJ . [ 2 ]
Annotations are often used by frameworks as a way of conveniently applying behaviours to user-defined classes and methods that must otherwise be declared in an external source (such as an XML configuration file) or programmatically (with API calls). The following, for example, is an annotated JPA data class: